Treadle



. (No Model.) 7

. v A. M. GREENWOOD.

TREADLE. No. 265,596. Patented Oct. 10,1882.

'Nrrm) STATES ATENT rricia ALBERT M. GREENWOOD, OF PHILLIPS, MA[NE.

TREADLE.

SPECIFICATION forming part of Letters Patent No. 265,596, dated October10, 182.

Application filed August 24, 1882.

To all whom it may concern Be it known that I, ALBERT M. GREEN- WOOD, ofPhillips, in the county of Franklin, State of Maine, have invented acertain new and useful Improvement in Treadles,of which the following isa description sufficiently full, clear, and exact to enable any personskilled in the art or science to which said invention appertains to makeand use the same, reference being had to the accompanying drawings,forming a part of this specification, in which Figure 1 is anisometrical perspective view, and Fig. 2 a side elevation.

Like letters of referenceindicate corresponding parts in the differentfigures of the drawlngs.

My invention relates to that class of treadles which are more especiallydesigned for sewin g-machines, jewelers lathes, 850.; and it consists ina novel construction and arrangement of the parts, as hereinafter morefully set forth and claimed, by which a new and more effective device ofthis character is produced than is now in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation, itsextreme simplicity rendering an elaborate description unnecessary.

In the drawings, A represents the upright or standard, which is providedat its upper end with the horizontally-projecting arm 13, and carriesnear its center the balance-wheel C, journaled on the shaft D. Apendulous lever, E, is pivoted at a to the outer end of the arm B, and asimilar lever, G, is pivoted at m to the inner end of said arm or to thetop of the standard A. The lever G is elongated, having its lower endcarried below the axis of the wheel 0 and bifurcated, as seen at m, theheel of the foot-piece H being pivoted therein, as shown at d in Fig. 1.The shaft D is provided with a crank, J, and pivoted to said crank andto the lower end of the lever E there is a horizontally-arran ged bar,K, acorresponding bar, L, being jointed or pivoted at o to the lever Gand at t to the lower end of the lever E. A pitman-rod, M, having itslower end bifurcated, is pivoted or jointed at Z: to the bar (No model.)

K, the toe of the foot-piece H being pivoted in the arms of said rod ata.

When the treadle is used for sewing-machines or lalhes the standard Aand arm B may sometimes be wholly or in part substituted by the table orcabinet of the machine, or by the bench of the lathe, if desired, or byattachments connected therewith designed to perform the same functions.

In treadles of this class as usually constructed the foot-piece has nohorizontal motion, the toe of the same being connected by a pitman-roddirectly with the crank of the balance or driving wheel, and thefoot-piece rocked-or given vertical reciprocating movements by the footto produce rotary movements of the wheel. There is also another form oftreadle, sometimes called the walkin g-treadle, in which the foot-pieceis disposed at the lower end of a pendulous lever, which is connected byproper intermediate mechanism with the crank,aud given horizontalreciprocating movements to produce rotary movementsof the wheel. Myinvention is designed to embody or combine both of these principles orforms, thereby securing in one treadle a large-part of all theadvantages pertaining to each. This will be more readily understood byreference to the drawings, by which and the foregoing description of thesame it will be seen that when the pitman-rod M is removed a walking orswinging treadle is produced, and that by the use of said rod, as shown,nearly all of the advantages of a treadle in which the foot-piece isconnected directly with the cranks are secured, in addition to thosepertaining to the walking-treadle. When the rod M is removed it ispreferable to pivot the foot-piece H at f, or nearer its center, in thelever G.

Having thus explained my invention, What I claim is-- 1. The pitman-rodM, in combination with the horizontal bar K, to which it is jointed, andthe foot-piece H, substantially as specified.

'2. In a treadle substantially such as described, the pendulous lever G,in combination with the lever E and bars K L, substantially as setforth.

ICO

3. The pendulous lever E, in combination with the horizontal bars 'K L,pitman-rod M, and foot-piece H, snhstantiallyas set forth and described.

4. Theimproved treadle describetLthe same consisting of the pendnlouslevers G E, horizontal bars K L, pitman-rod M, and foot-piece H, incombination with the wheel 0, shaft- D, crank J, standard A, and mm B,substantially as specified.

ALBERT M. GREENWOOD. Witnesses:

ANDREW PINKHAM,

ELISHA MERROW.

